Area code 313 is a telephone

area code A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. Telephone numbers are the addresses of participants in a telephone network, rea ...

in the

North American Numbering Plan The North American Numbering Plan (NANP) is an integrated telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1, World Numbering Zone ...

serving

Detroit Detroit ( , ) is the List of municipalities in Michigan, most populous city in the U.S. state of Michigan. It is situated on the bank of the Detroit River across from Windsor, Ontario. It had a population of 639,111 at the 2020 United State ...

and most of its closest suburbs in

Wayne County, Michigan Wayne County is the most populous County (United States), county in the U.S. state of Michigan. As of 2020, the United States census placed its population at 1,793,561, making it the List of the most populous counties in the United States, 19th ...

. It includes the enclave cities

Hamtramck Hamtramck ( ; ; ; ) is a city in Wayne County in the U.S. state of Michigan. An enclave of Detroit, Hamtramck is located roughly north of downtown Detroit, and is surrounded by Detroit on most sides. As of the 2020 census, the city had a po ...

and Highland Park, as well as Allen Park, Dearborn,

Dearborn Heights Dearborn Heights is a city in Wayne County in the U.S. state of Michigan. An inner-ring suburb of Detroit, Dearborn Heights is located about west of downtown Detroit. The city shares a small border with Detroit, and is considered a bedroom c ...

Ecorse Ecorse ( ') is a city in Wayne County in the U.S. state of Michigan. The population was 9,305 at the 2020 census. Ecorse is part of the Downriver community within Metro Detroit. The city shares a northwestern border with the city of Detroit ...

, the

Grosse Pointe Grosse Pointe is a group of five adjacent suburbs in the Metro Detroit, Detroit metropolitan area on the shore of Lake St. Clair. From southwest to northeast, they are: *Grosse Pointe Park, Michigan, Grosse Pointe Park *Grosse Pointe, Michiga ...

communities, Harper Woods, Inkster, Melvindale,

Lincoln Park Lincoln Park is a park along Lake Michigan on the North Side of Chicago, Illinois. Named after US president Abraham Lincoln, it is the city's largest public park and stretches for from Grand Avenue (500 N), on the south, to near Ardmore Avenu ...

, Redford, River Rouge, and

Taylor Taylor, Taylors or Taylor's may refer to: People * Taylor (surname) ** List of people with surname Taylor * Taylor (given name), including Tayla and Taylah * Taylor sept, a branch of Scottish clan Cameron * Justice Taylor (disambiguation) ...

north of Goddard Road and east of Holland Road.

History

Area code 313 was assigned as one of the original 86 area codes in October 1947, when it was designated to serve the southeastern quadrant of Michigan, including

Metro Detroit Metro Detroit is a major metropolitan area in the U.S. state of Michigan, consisting of the city of Detroit and over 200 municipalities in the Southeast Michigan, surrounding area. There are varied definitions of the area, including the officia ...

Flint Flint, occasionally flintstone, is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely used to make stone tools and start ...

, and the southern part of

The Thumb The Thumb is a region and a peninsula of the U.S. state of Michigan, so named because the Lower Peninsula of Michigan, Lower Peninsula is shaped like a mitten. The Thumb area is generally considered to be in the Central Michigan region, east of t ...

. The rest of the eastern half of the

Lower Peninsula The Lower Peninsula of Michigan – also known as Lower Michigan – is the larger, southern and less elevated of the two major landmasses that make up the U.S. state of Michigan; the other being the Upper Peninsula, which is separated by the S ...

was assigned to

area code 517 Area code 517 is a telephone area code in the North American Numbering Plan (NANP) for the south central portion of the Lower Peninsula of Michigan, centered on the state capital, Lansing. Other notable cities in the service area are Charlotte ...

. Because of the demand for new telephone service in Detroit's suburbs and neighboring areas, the northern portion, including Detroit's northern suburbs, Flint and the southern Thumb were split off with new

area code 810 Area code 810 is a telephone area code in the North American Numbering Plan for the east-central part in the U.S. state of Michigan. The numbering plan area (NPA) comprises the cities of Flint, Lapeer, Port Huron, and the southern portion of th ...

on 1 December 1993 with a permissive dialing period that ended on August 10, 1994. On 13 December 1997, the remaining 313 area was reduced to its current size when the western portion, including

Ann Arbor Ann Arbor is a city in Washtenaw County, Michigan, United States, and its county seat. The 2020 United States census, 2020 census recorded its population to be 123,851, making it the List of municipalities in Michigan, fifth-most populous cit ...

, Monroe County and western and

downriver Downriver is a region of the Detroit metropolitan area in the U.S. state of Michigan covering 18 municipalities in Wayne County, south of Detroit, along the western shore of the Detroit River. Etymology The name derives from the fact that the ...

Wayne County, received

area code 734 Area code 734 is a telephone area code in the North American Numbering Plan (NANP) in southeast Michigan. It was created in 1997 in an area code split of area code 313 and comprises a numbering plan area of all of Washtenaw and Monroe counti ...

in another split. In February 2000, area code 679 was reserved for future numbering relief in form of an

overlay complex In telecommunications, an area code overlay complex is a telephone numbering plan that assigns multiple area codes to the same geographic numbering plan area (NPA). Area code overlays are implemented in territories of the North American Numbe ...

for the 313 numbering plan area, as part of action for two other overlay plans in the larger Detroit metropolitan area. The relief schedule was canceled, however, in April 2000, and implementation of the overlay was suspended. Relief planning remained in progress, but 2021 estimates did not expect 313 to be exhausted until 2025, when in April the exhaustion threshold was extended to the first quarter of 2028. Opponents of the overlay relief plan cited the cultural importance and impact of area code 313, in which "313" is often synonymous with the city of Detroit. On March 17, 2025, the Michigan Public Service Commission announced that area code 679 has been scheduled to be in-service in an overlay with 313 on November 7, 2025, which is the earliest date of central office code activation possible, given that all prefixes in 313 have been assigned. A permissive

ten-digit dialing Ten-digit dialing is a telephone dialing procedure in the countries and territories of the North American Numbering Plan (NANP). It is the practice of including the area code of a telephone number when Dialling (telephony), dialing to initiate a t ...

period for 313 is scheduled for April 7, 2025 through October 7, 2025, after which time ten-digit dialing will be required.

In popular culture

Rappers from Detroit often mention ''313'' in their music in reference to this area and its notoriety. One of the tracks in the 1996

Eminem Marshall Bruce Mathers III (born October 17, 1972), known professionally as Eminem, is an American rapper, songwriter, and record producer. Regarded as one of the greatest and most influential rappers of all time, he is credited with popula ...

independent debut solo album ''

Infinite Infinite may refer to: Mathematics *Infinite set, a set that is not a finite set *Infinity, an abstract concept describing something without any limit Music Performers *Infinite (group), a South Korean boy band *Infinite (rapper), Canadian ra ...

'' is titled "313". In the 2002 film ''8 Mile'', featuring the artist, the 313 area code is mentioned multiple times, because of the film's setting in Detroit. Eminem's character, B–Rabbit, and his friends call their group "three one third," their nickname for the area code. In the last rap battle of ''8 Mile'' the first verse of the rap is "Now everybody from the 313, put your ... hands up and follow me!"

References

External links

Map of Michigan area codes
at

Administration's website {{coord, 42.3, N, 83.1, W, region:US-MI_scale:120000, display=title

313 __NOTOC__ Year 313 ( CCCXIII) was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Constantinus and Licinianus (or, less frequently, year 1066 ''Ab urbe condita''). The denom ...

Culture of Detroit Telecommunications-related introductions in 1947

History

In popular culture

See also

References

External links